(つら)

つら
noun
face, surface (colloquial)
1. face
The front of the head (colloquial/rude).
いい(つら)(かわ)だ。
What nerve.
(つら)(かわ)(あつ)い means 'thick-skinned, shameless.'
How can you say that with such a shameless face?
あれだけ迷惑(めいわく)かけておいて、どの(つら)さげて()(しん)じられない
I can't believe they had the nerve to show up after causing so much trouble.
どの(つら)さげて is a set phrase meaning 'how dare you show your face.'
2. surface, front
The outer part of something.
To shave the surface of a board.
I installed the shelf flush with the wall surface.
I carefully shaved and finished it so the surfaces of the two boards would fit perfectly.

(つら) has two senses: (1) face (colloquial/rough), and (2) surface of a material.

SENSE 1 — FACE:
More rude than (かお). Typically used in negative or aggressive contexts.

EXPRESSIONS:

  • (つら)(かわ)(あつ)い: shameless, thick-skinned
  • どの(つら)さげて: how dare you show your face
  • いい(つら)(かわ)だ: what nerve / serves you right

SENSE 2 — SURFACE:

Refers to the outer face of a material, especially in craftsmanship and construction.

  • (いた)(つら): the surface of a board
  • (かべ)(つら): wall surface

ALTERNATE READINGS OF (めん):

  • (めん): mask, face (in compounds like 仮面(かめん))
  • (おもて): front side, surface (formal)